Drill bit



FIG. 1 is a perspective view of the drill bit, the dashed portion of which does not form a part of the claimed design;

FIG. 2 is a rear view of the drill bit;

FIG. 3 is a front view of the drill bit, the dashed portion of which does not form a part of the claimed design;

FIG. 4 is a front side view of the drill bit, the dashed portion of which does not form a part of the claimed design; and,

FIG. 5 is a rear side view of the drill bit, the dashed portion of which does not form a part of the claimed design. 

The ornamental design for a drill bit, as shown and described. 